<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="5">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="clearAble">
            <el-button slot="append" icon="el-icon-search" @click="getUserList(queryInfo)"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" style="width: 100%" border stripe>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态" prop="role_name">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope='scope'>
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="editVisible(scope.row)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUser(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="bottom" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>

      <!-- 提示添加用户对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="dialogVisible"
        width="50%"
        @close="resetFrom('ruleForm')">
        <!-- 内容主体区域 -->
        <el-form :model="addRuleForm" :rules="addRules" ref="ruleForm" label-width="100px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addRuleForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addRuleForm.password" type="password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addRuleForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addRuleForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 内容主体按钮 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="dialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUserInfo">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 提示修改用户对话框 -->
      <el-dialog
        title="提示"
        :visible.sync="editDialogVisible"
        width="30%"
        @close="resetFrom('editRuleForm')">
        <!-- 修改内容区域 -->
        <el-form :model="editUser" :rules="addRules" ref="editRuleForm" label-width="100px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="editUser.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editUser.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editUser.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 修改内容按钮区域 -->
        <span slot="footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editCommit(editUser.id)">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 分配权限对话框 -->
      <el-dialog
        title="分配权限"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
        <div>
          <p>当前的用户：{{userInfo.username}}</p>
          <p>当前的角色：{{userInfo.role_name}}</p>
          <p>分配新角色：
            <el-select v-model="selectRoleId" placeholder="请选择">
              <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱
    const checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-z0-9_-]+)@([\da-z-]+)\.([a-z]{2,6})$/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('邮箱有误，请检查后重新输入！'))
    }
    // 验证邮箱
    const checkPhone = (rule, value, callback) => {
      const regPhone = /^1[3456789]\d{9}$/
      if (regPhone.test(value)) {
        return callback()
      }
      callback(new Error('手机号有误，请检查后重新输入！'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      // 总共多少条数据
      total: 0,
      // 对话框是否显示
      dialogVisible: false,
      // 添加用户信息
      addRuleForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户的校验
      addRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在3到5个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在6到15个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkPhone, trigger: 'blur' }
        ]
      },
      // 修改用户信息对话框是否显示
      editDialogVisible: false,
      // 修改用户的信息
      editUser: {},
      // 分配权限对话框
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      // 默认显示的角色
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 每页 显示多少条数据
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 修改 switch 并修改 数据库的值
    async userStateChange(userState) {
      const { data: res } = await this.$http.put(`users/${userState.id}/state/${userState.mg_state}`)
      if (res.meta.status !== 200) {
        userState.mg_state = !userState.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 清除输入框的值，回到首页
    clearAble() {
      this.queryInfo.pagenum = 1
      this.getUserList(this.queryInfo)
    },
    // 清除对话框的值
    resetFrom(fromName) {
      this.$refs[fromName].resetFields()
    },
    // 添加用户
    addUserInfo() {
      this.$refs.ruleForm.validate(async valid => {
        // console.log(valid)
        if (!valid) {
          return false
        }
        const { data: res } = await this.$http.post('users', this.addRuleForm)
        // console.log(res)
        if (res.meta.status !== 201) {
          return this.$message.error('用户添加失败，请重新操作！')
        }
        this.$message.success('用户添加成功！')
        this.dialogVisible = false
        // 必须重新请求数据
        this.getUserList()
      })
    },
    // 显示修改对话框，填上数据
    async editVisible(userState) {
      const { data: res } = await this.$http.put(`users/${userState.id}/state/${userState.mg_state}`)
      // console.log(res)
      this.editUser = res.data
      this.editDialogVisible = true
    },
    // 修改完成，表单验证并提交更新信息
    editCommit(id) {
      this.$refs.editRuleForm.validate(async valid => {
        if (!valid) {
          return false
        }
        const { data: res } = await this.$http.put(`users/${id}`, {
          email: this.editUser.email,
          mobile: this.editUser.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.success('修改用户数据失败，请重新输入！')
        }
        this.$message.success('修改用户数据成功！')
        this.editUser = res
        this.editDialogVisible = false
        this.getUserList()
      })
    },
    // 删除用户
    async removeUser(id) {
      const removeResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warnsing'
      }).catch(err => {
        return err
      })
      if (removeResult === 'confirm') {
        const { data: res } = await this.$http.delete(`users/${id}`)
        console.log(res)
        if (res.meta !== 200) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        this.getUserList()
      } else {
        return this.$message.info('已经取消删除')
      }
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      this.roleList = res.data
      console.log(this.roleList)
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新用户数据失败！')
      }
      this.$message.success('更新用户数据成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
